– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Mon 05 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Mon 05 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Warm (max 20°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 7mm), mostly falling on Fri afternoon. Warm (max 21°C on Thu afternoon, min 4°C on Sat night). Wind will be generally light. | ||||||||||||||||
Mon 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | | | | |  | |  | |  | | |
clear | clear | some clouds | some clouds | clear | clear | clear | clear | clear | clear | clear | rain shwrs | rain shwrs | rain shwrs | rain shwrs | light rain | rain shwrs | |
Cloud base (m) | 1700 | 9200 | 6050 | 5550 | 8400 | 8550 | 9000 | 9150 | 8200 | 900 | 600 | 650 | 900 | 750 | 1750 | ||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 0.1 | 3 | 1.4 | 0.3 | 1.7 | 0.6 |
max °C | 18 | 14 | 17 | 18 | 15 | 18 | 20 | 16 | 19 | 21 | 17 | 12 | 12 | 9 | 8 | 8 | 7 |
min °C | 17 | 13 | 13 | 17 | 14 | 14 | 19 | 15 | 15 | 20 | 13 | 12 | 11 | 7 | 6 | 8 | 4 |
chill °C | 17 | 13 | 13 | 17 | 14 | 14 | 19 | 15 | 15 | 20 | 12 | 11 | 10 | 7 | 6 | 8 | 2 |
Freezing level m | 3600 | 3750 | 3800 | 3800 | 3900 | 4000 | 4050 | 4050 | 4050 | 4050 | 3800 | 3000 | 2300 | 1850 | 1500 | 1550 | 1650 |
 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — |
 | 6:38 | — | — | 6:37 | — | — | 6:35 | — | — | 6:32 | — | — | 6:30 | — | — | 6:29 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 20°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 7mm), mostly falling on Fri afternoon. Warm (max 21°C on Thu afternoon, min 4°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP9664 | |||||
Skagit Burlingto / t Vernon Airport |  | ||||
SHIP8414 | |||||
SHIP1342 | |||||
SHIP6469 | |||||
SHIP2467 | |||||
SHIP2244 | |||||
SHIP3680 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.